It's called "espionage", purposely use an unsecured account so it can be hacked, there could be many motives but probably money is the most likely. FOIA is not likely the reason because deleted, scrubbed emails almost always can be recovered. She new the server would be hacked by everybody but she did it anyways, Obongo was complicet, evidence is in the coverup and his lies. Everybody she had communication with knew what she was doing and went along with it from Generals to presidents, obviously they were part of the conspiracy.

There is a very sinister motive we likely will never know about. obviously they all knew what they were doing, any government officials who had email contact with her. She had a private address for official buisness.